Battery-contact.



J. H. GUGLBR. BATTERY CONTACT.

APPLIoATIoN FILED PEB. 21, '1908.

To all whom 'it may concern:

Be it known that I, JULIUs I-I. GUGLER, a citizen of the United States, residing at Minneapolis, in the county of Hennepin and State of Minnesota, have invented certain iew and useful Improvements in Battery- Contacts; and I do hereby declare the folowing to be a full, clear, and exact descripion of the invention, such as will enable thers skilled in the art to which it apperains to make and use the same.

My invention relates to electric batteries nd has for its primary object to provide an mproved contact for connecting an electrode o a lead thereof.

To the above end, the invention consists f the novel devices and combinations of deyices hereinafter described and defined in .he claim.

One embodiment of the invention is illusrated in the accompanying drawings wheren like characters indicate like parts throughut the several views.

Referring tothe drawings; yFigure 1 is a lan view showing the body or jar of a priary battery cell. Fig. 2 is a vertical section aken on the line m2 m2 of Fig. 1; and Fig. i is a vertical section taken on the line w3 w3 f Fig. 1, and showing also portions of the ositive and negative electrodes and certain ther elements of the battery.

In the construction illustrated, the outer hell 1 of the cell is rectangular in cross secion, and is constructed of vulcanite rubber, lass, or other suitable non-conducting ma- In its bottom, the jar 1 is formed ith a well, preferably in the form of an anular groove 2, having at one corner of the ercury indicated by the character Y. The ositive electrode 4 of the cell is, in this arangement, cylindrical and is made of zinc r other suitable metal. The lower end of contained within the annular well 2. One

e pocket 3 of the well 2. The extreme wer end of said lead 5 is preferably bent terally, as shown at 5a, so as to give ineased contact surface with the mercury, d the body of said lead is preferably cov- Specication of Letters Patent.

a 1 an outwardly extended pocket 3. This` ell 2 and its pocket 3 contain a body of.'

ytrated in the said drawings.

is electrode 4 is immersed inthe mercury UNITED sjrnrizs PATENT osrion. '.IULIUS H. GUGLER, MINNEAPOLIS, MINNESOTA, ASSIGNOR T0 BATTERY (.OMIIPAITY,-

' A CORPORATION. f

BATTERY-CONTACT.

Patented Nov. a, '1909,

Application led February 21, 1908. Serial No. 417,020.

ered with insulation 5"'eXcept at its lower end portion. 'D f The mercury gives a better contact between the lead '5 and electrode 4 than can be obtamed by a soldered joint, or clamp or screw contact, and affords the lowest possible resistance between the lead and electrode, and, furthermore, is not of the lead from the electrode, or'vlce versa,

and equally easy connection thereof, since it I is only necessary to remove the one or the other of the said parts from the mercury, to effect the separation, or to place the said parts in the mercury, electrical connection. In the arrangement described, the mercury will be covered by the battery fluid. In the battery cell illustrated, the negative electrode 7, being of cylindrical form, is adapted to fit within a porous earthen jar 6, which jar in turn is adapted to fit loosely within the cylindrical electrode 4 and to rest on the bottom of the shell or outer jar 1.

In the companion application S. N. 417 ,021, filed of even date herewith, which has become Patent No. 914038, I have disclosed and claimed a modified form of battery contact employing mercury as the connectingand conducting means between what, for the purposes of illustration, is designated as the negative electrode of the battery and the connecting lead thereof.

In practice, I propose toutilize in a battery cell the construction shown in the drawings of the present application vin connection with the construction illustrated in my said companion application, but I do not,v

of course, limit myself to such combination of parts or to the specific construction illus- In a battery of several cells an ordinary rubber covered wire, with band ends, may be used to make connection between cells. The electrode 4 maybe reversed end for end so as to insure even consumption of the metal or other materialv of the said electrode. In fact, this makes it possibleto use the said electrode until every ounce thereof has been consumed. The mercury used as the contact amalgamates portions of the lead and electrode connected. thereby and thus protects the same from local action in the batter Furthermore, this mercury'orcontact fluid subject to corrosion. `At the same time, 1t permlts easy separation to effect the complete.

aaaas reduces to a minimum the resistance and also eliminates variation in resistance which, in other batteries, parts. When -the mercury contact is located at the bottom of the jar, or is otherwise submerged in the battery fluid, it is protected from oxidation and evaporation, and when it is not thus submerged in the battery fiuid, the mercury would preferabl be covered by oil, water, or other protecting fluid. The body of mercury used as a contact between the electrode `and lead may be variously arran ed.

T e im ortant feature of this invention consists o extending an insulated Wire lead over the top of the said jar, through the solution' therein contained and dipping the same loosel into mercury contained at the bottom of t e j ar. This gives an extremely simple and eflicient construction, eliminates the usev of .a conductor of special construction as part ofthe lead and permitso the lead wire to be removed and again applied without the manipulation of any sort of fastenis frequently due to loose' ing device. All of that portion of the lead wlre 5 exceptthe extreme lower end thereof, should be covered with insulating material to prevent local action on or disintegration of said lead wire under the action of th battery fluid.

In a battery, a jar having in its bottom an annular well formed with an outwardly extended pocket containing a body of mercury, 1n combination with a lead wire extended over the top of the jar, down through the battery fluid and loosely seated at its lower end the mercury contained in said pocket, the main submerged body ortion of said lead wire being covered witi insulating material.

In testimon whereof I atlix my signature `in presence o two Witnesses.

Witnesses:

H. ,W. DARBY, F. D. MERCHANT. 

